Question

Катя сидела на остановке и думала вот бы к маминым деньгам прибавить половину и ещё 300 рублей. Тогда маме хватило бы денег, чтобы мне купить игрушку. Сколько у мамы денег, если игрушка стоит 450 рублей.

Answer 1

450-300=150 150:2=75 Ответ: сейчас у мамы 75 рублей.

Answer 2

Problem Analysis

Katya wants to add half of her mother's money and an additional 300 rubles to her mother's money so that she can buy a toy worth 450 rubles. We need to determine how much money Katya's mother has.

Solution

Let's assume the amount of money Katya's mother currently has is M rubles.

According to the problem statement, if Katya adds half of her mother's money and an additional 300 rubles to it, the total amount would be enough to buy the toy worth 450 rubles.

Mathematically, we can represent this as:

M/2 + 300 = 450

To find the value of M, we can solve this equation.

Calculation

Let's solve the equation to find the value of M:

M/2 + 300 = 450

Subtract 300 from both sides:

M/2 = 450 - 300

M/2 = 150

Multiply both sides by 2 to isolate M:

M = 150 * 2

M = 300

Answer

Therefore, Katya's mother has 300 rubles.

Please let me know if you need any further assistance!